Spring RTS Engine

I ran into a weird bug playing with my brother tonight. I built a big bertha and the first shot launched a stumpy across the screen into my units. Upon impact the stumpy exploded and destroyed my entire front line. It happens around 27:00.

Yeah that worked great, thanks!

I'm getting the same error in windows on my desktop and laptop with 0.79.1.2. Double-clicking the replay file in my demos folder doesn't do anything, the file type is registered with spring.exe but it doesn't start the replay.